Quick-acting vise having sliding jaw



Aug. 7, 1951 HARTMANN 2,563,467

P. QUICK ACTING VISE HAVING SLIDING JAW SHANK CLUTCHE'D BY BELL-CRANK CAM ACTUATED BY AN OSCILLATING ECCENTRIC Filed 00%,. 31, 1946 ATTORNEYS Patented Aug. 7, 1951 QUICK-ACTING VISE HAVING SLIDING JAW SHANK CLUTCHED BY BELL-CRANK CAM ACTUATED BY {\N OSCILLATING ECCEN- TRIC PhilipHartmann, Racin mann Manufacturing e, Wis., assignor to Hart- Company Racine, Wis., a

V I corporation of Wisconsin Application October 31, 1946; Serial No. 706,903

The invention relates to vises for home, shop, and other uses, andmore particularly :tothat type of vise in which the movable jaw has afree move-.- ment for rapid adjustment, is thereafter locked against such.movement,. and then moved into tight clamping engagement with the work.

The object of the present inventionis toproe vide a simplestrong, and long-lived mechanism for effecting the setting or locking of the freely movable jaw and its movement intotight clamping engagement with the work. More particularly, a cam leverlocking device is associated with the freely movable jaw and is operate. and controlled by. an eccentric or cam on a manually oscillatory shaft.

A further object of the. present invention is to provide a vise having a collar freely slidably mountedon a part of the movable jaw and carry: ing a cam lever lock, one arm of, which is. op.- eratively engaged with an operating eccentric and spring means for holding said lever at all times in operative engagement with said eccentric and thus take up any wear thatmay oc-. curlin the operating parts of the device.

The invention further consists inthe several features hereinafter described and :more particu larly defined by claims at the conclusion hereof. -.In the drawings; l

Fig. 1 is a side elevation view of a vise embodying the invention, parts. beingbrokenaway and parts beingshown section;

Fig. 2 is a front elevation .view of the. vise;

Fig. 3 is a detailed vertical sectional view taken on the line 3-3 of Fig. 1;

Fig. 4 isa detailed vertical sectionalview taken on the line 4-4 ofFig. l; j .1

Figs. 5, 6, and 7 are detailed vertical sectional views taken on the line A--A of Fig. 3, showing the parts in different posiitons. y g

Referring to the drawi gs, the numeral 8 desig hates the fixed jaw and 9 the movable jaw of my vise. j i The fixed jaw 8 forms a supporting frame and as shown has a base portion I0 for mounting on a support II to which it is clamped by a hand clamping screw 12 though the base may. also be. of the swivel type in. which the. jaw 8 may. ous positions relative. The frame of the jaw 8 has spaced vertically disposed walls I3 and J4 proturned and locked. in var to a fixed base.

vided with alined sets of bores 15. j

The movable jaw, 9 has spaced round steel bars;

l6 fixedly anchored thereto and freelyslidably mounted inthe upper. and lower bores 15.. Both- Jews have hardened steel. clamping. faces [1. Ex.-

' fiClaims. (01. 81-26) treme outward movement of the jaw 9 is limited by a stop collar I8 secured to one of the bars I6 by a screw I9.

A hardened steel collar 20 has a diameter providing a close sliding fit with the upper bar l6, so that said bar will slide freely relative thereto and without any cooking action of the collar relative to the bar, said collar having eared' ex.- tensions 2! in which is mounted a pivot pin 22 and having a slot 23 extending upwardly from its bottom and of less width than the diameter of the bar 16.

A lock lever 24 of hardened steel is mounted to swing freely about the pivot formed by the pin 22 and hasa camlocking surface 25, which surface is of rounded contour incross section with aradius substantially that of the bar l6 as shown at 26 and whose lengthwise curvature is on a radius whose center is eccentrically disposed relative to the center of thelever, so that as the lever is swung slightly from the position shown in Fig. 5 where it is free of the bar, it will first move into a locked wedging engagement with said bar, as shown in Fig. 6, and then move with said bar as shown in Fig. 7.

For moving the lever 24, it is provided with a release lever arm 21 and a lockinglever arm 28; said arms cooperating with an eccentric or cam 29 on a rotatable or oscillatory shaft 30 extend-.

ing transversely through the frame of the fixed jaw B. A part of the eccentric 29 is provided with a flat or clearance or relief surface 3|, and the arm 21 may also have a clearance notch 32 formed therein.

The shaft 30 is provided with an exteriorly disposed operating lever handle 33 whose extreme release position may be limited or determined by a stop in the form of a .set screw 34 mounted in the wall l3 and engageable with a part of the eccentric. as shown in Fig. 1. a

For holding the lever 24 in constant operative relation with the eccentric 29 and forassisting in the movement of the jaw 9 to a release position, a spring 35 is interposed between the front end of the collar 20 and the frame of the vise and is here shown as passing loosely through a. bore 36 in the wall 14 and clamped in operative position by a back plate 31 and a screw 38.

With the above arrangement when the handle, 33 is in the fullline positionvthe parts are. in the position shown in Figs. 1 and 5, under which.

conditions the movable jaw 9 may be slid freely toward or away from the fixed jaw 8, the bar l6 sliding freely through the collar 20 and the surface 25 being out .of engagement with said bar.

Thus the jaw 9 may be moved freely into engagement with the work W, as shown in Fig. 1. Then as the lever or handle 33 is moved from its full line position to the first dotted line position to the right as-indicated in. Fig- 1, h

eccentric 29. is turned clockwise. thus bringing as indicated in Fig. 1, the further increase of the l radius of the eccentric 29 causes it to move the lever 24 and consequently the partslocked to it to the right including the collar 20, bars l6;,, and jaw 83 until. the; work W is: clamped so tightly as. to. resist. zfurthersqueezing action of the jaws upon it. This last movementpf the jaw 8.; increases the tensionuoi the spring 35, so

that on. the, reversemovement oi the lever 33 this increased'tension will be expended in tend.- ing to move. the collar 28., bar l6, and jaw 8 to. the left to. move the. jaw 8 to. a release position, it being also noted that as. the eccentric 29 rotates to a releaseposition, it engages the. arm 21 as show-11in Fig. to tip the lever 24 out of locking engagement with the bar 16. The spring.

also inconstantly urging the collar 26 toward the left together with the lever 24 into contact with the eccentrloi 9. takes. upany wear that may develop. between the/operatingshaft, 39 and the lever 24, and saidlever 2.4, and, the bar I6, and also, assists inholdingthe. leverhandle 34 in itsv upper full line position.

It will also be. noted that while the cam. surface. 25. tightly engagesthebar, there are no sharpsurfaces-toqin any way out into. and roughen the. surfaceof the bar It, so. that it will always. slide freely relative to the collar Zil'inthe unlocked position of the vise; r

Idesire itto. be. understood that this invention is not; to; .be limitedto any particular form. or arrangement-"of parts:..excep,t.in so, far assuch.

limitations are included'in the: claims.

' WhatI claim as my invention. is:

. 1... In avise. the combination of; a fixed jaw. a movable jawslidamvm vable. relative to said fixed: jaw and; including; a. bar,: a collar mounted 'on said bar for movement therewith and. also.

slidably' movableirelative: thereto, a locking; lever movably mounted on said collar and. having a lookingoam.surfaceprojecting through a portion of'the: collar. and movable relative to. said collar toengage said bar and clamping-1y lock"v said bar between itandthe oppositeside of said collar. whereby said bar, collar, andlever may move,- as a; unit,. and manually controlled means, carriedby the fixed jaw. and engageable. with said lever for moving said lever to, a lock. release position relative to. said collar and bar topermit tree sliding movement of=. said: barin said collar and engageable directly. with; said lever. for moving. said lever to the-,rclampingly locked position of said collar; and lever with said bar as; a. unit, and for movement. of .this. unit through. engagement with said. lever; to bringr said movable; jaw to a work: clamping position.

2.. In a vise, the. combination of. a: fixed jaw, a movable jaw slidablymovablerelativetov saidv fixed jaw and including; a, cylindrical, bar, acollarx mounted on said bar for movement therewith and also slidably movable relative thereto, a locking lever pivotally carried by said collar and having an eccentrically disposed locking cam surface curved in cross section on; a radius substantially equal to that of the barand projecting through a portion of the collar and movable relative to said collar to engage said bar and clampingly lock said bar between it and the opposite side of said collar whereby said bar, collar, and lever may move as a unit; and manually controlled means carried by thefixed jaw and engageable with said lever for moving said lever to a lock release position relative. to said collar and barto permit iree slidingmovement of said bar in said collar and directly engageable with said lever for mov-' -ing said lever to the clampingly locked position of said collar and lever with said bar as a unit and for movement of this unit through engagement with said lever to bring said movablajawto a workclamping. position.

. .3; Inavise, the combinationof afixed jaw, a movable. jaw slidablyv movable. relative. to. said fixed jaw: and includingga bar, a collar mounted on isaid'barlfor. movementtherewith and also slidably. movable relative thereto, alocking lever movably mounted on. saidcollar and having a locking cam. surface projecting. through. a portion ofthecollar. and movablesrelative to said collar toengage. said bar to lockthe bar between it and the :opposite side. ofsaid. collar whereby said bar, collar, and lever may moveas a unit, an-osciIlatory-shaft. having a cam. directly engageablewith said lever to'movexsaid lever rela-. tive to said collar to lock said bar, lever, and collar as: a unit and thereafter through saidldirectengagement move-this unit tobringthe movable jaw to a work clampingposition, and means for maintaining said lever in operative engagement with said cam. a 4. In avise,.the combination of a fiXed jaw, a movable jaw slidably' movable relative to said fixed jaw and'including a bar, a. collar mounted on said bar: for movement therewith and also sl-idably movable relative thereto, a locking lever pivotal-ly-carried 133 said collar andhaving an. eccentricallydisposed locking. cam surface pro jecting through a portion of thecollar and movablerelative to said collar to engage said bar to lock the bar: betweenit: and the. opposite side of said collar whereby: saidwbar, collanan'd lever may move as a unit, said lever having alock release arm and a: locking arm, an. oscillatory shaft having a cam engageable with said arms to move said lever to release position relative to said bar when engaging said lock release arm and to -move said lever relative to said collar to lock said bar, lever, and'collar as a unit when engaging said locking armand, when: so en'- gaged, to move said unit'to bring the movable jaw to a work'clampingposition, and means maintaining said lever in operative engagement with said cam. a .7

5. Ina-vise, the combination of a fixed-jaw; amovable jaw: slidably movable relative to said fixed jaw and including a bar, a collar mounted on the bar for movement therewith'and' sliding movement relative thereto, a locking lever mov ably carried by the coll ar and having a locking camvsurfaeeprojecting through a portion of -thecollar, and bar may move as a unit; an oscil latory shaft havingi ascanr to: move :said lever relative to said collar to an unlocked position relative to said bar and directly engageable with said lever to move said lever relative to said collar toilock said bar, lever, and collar as a unit and thereafter through said direct engagement move this unit to bring the movable jaw to a work clamping position, and spring means acting to hold said lever in operative engagement with said cam and for moving said movable jaw to a release position.

6. In a vise, the combination of a fixed Jaw, a movable jaw slidably movable relative to said fixed Jaw and including a bar, a collar mounted on said bar for movement therewith and sliding movement relative thereto and having bifurcations at one end thereof, a locking lever pivotally mounted on said collar between said bifurcations and having an eccentrically disposed looking cam projectable through said collar and mov= able relative to said collar to engage with said bar to lock the bar between it and the opposite side of said collar whereby said collar, bar, and lever may move as a unit, said collar having an extended bearing surface on said bar compared to said cam locking surface, and manually conrelative to relative to said bar to permit free sliding movement of said bar and directly engageable with said lever for 5 tilting said lever relative to said collar to a locked position with said collar and bar as a unit for movement of said unit through said direct engagement to bring the movable jaw to a Work clamping position.

PHILIP HARTMAN N.

REFERENCES CITED The following references are of record in the file of this patent:

Number UNITED STATES PATENTS 

